Heel-trimming machine



(No Model.) 2 Sheets- Sheet 1.

M. A. TYLER.

HEEL TRIMMING MACHINE. No. 282,591. Patented Aug. 7, 1883.

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MERRILL A. TYLER,'OF ROCKLAND, MASSACHUSETTS.

HEEL-,TRIMMINIG MAcHlNl-z.'

SPECIFICATION forming part of Letters Patent No. 282,591, dated August7, 1883.

Application tiled September 16, 18S-2. Renewed JulyS, 1883. (No model.)

heel-pattern attached to the, jack and having Y the exact form to beimparted to the lboot or shoeheel, a knife-carrier adapted to beoscillated or reciprocated on the pattern, and provided with atrimming-knife, mechanism for oscillating or reciprocating theknife-carrier, and mechanism for feeding the jack and pattern forwardstep by step to present a new portion of the heel to the trimming-knifeafter each movement of the knife.

The invention also consists in certain details of construction andcombinations of parts, all of which I will now proceed to describe andclaim.

Of the accompanying drawings, forming a part of this specification,Figure Irepresents a front elevation of a heel-trimming machineembodying my invention. Figs. I, 2, 3, 3, 4, 5, 6, 7, and 8 representviews of details.Y

The same'letters of reference indicate the same parts in all thefigures.

In the drawings, A represents the supporting-frame of the machine, whichis provided with suitable ways, on which slides the jack B, said jackbeing adapted to move longitudinally. The jack is composed of a base, 2,which rests on the guides of the frame A, a post or heel-rest, 3, apost, 4, containing a slot or socket, a bar, 5, adapted to slide in the.socketed post 4, and a foot, 6, on the end of the bar 5, adapted toclamp the boot or shoe heel C against the rest 3. The bar 5 is formed asa rack on its lower edge, and with said rack is engaged a pinion orsegment, D, on an arbor, E, journaled in the post 4. The arbor E isprovided with a lever, F, having a springdog, G, which engages with theteeth of a ratchet-segment, H, affixed tothe post 4, said lever, dog,and ratchet holding the bar 5 and foot 6 in any position to which it maybe moved. y

I represents the heel-pattern, which is attached by a screw, J, to thepost 3 in the relation to the boot or shoe heel represented in Fig. I.Said pattern is of the exact shape to be imparted to the boot or shoeheel, and has a vertical slot through which the screw J passes, saidslot and screw enabling the pattern to be adj usted vertically.

K represents the knife-carrier, and L the trimming-knife mountedthereon. The carrier K is adapted to slide in guides formed in a blockor holder, K, which in turn is adapted to slide on a rotary cross-head,M, and is provided at its upper end with two rollers, N N, projectinginto a heel-shaped groove, Q, in a plate, P, attached to a fixed post,Q, on the frame A. A cavity, a, is formed in the toolcarrier K,extending downwardly from theV upper end of the carrier. Into thiscavity projects a rod, b, which is rigidly attached to the holder K. A`spring, c, interposed between the inner end of the rod b and the bottomof the cavity a, presses the carrier against the pattern I, the carrierhaving a roller, B', which bears on the pattern.

R represents a shaft journaled in the post Q, passing through the plateI), and rigidly attached to the cross-head M. To said shaft is rigidlyattached a cog-wheel or pinion, S, with which meshes a vertical rack, T.The rack is reciprocated vertically by means of a crank-pin, U, on adisk, V, attached to the driving-shaft W, said crank-pin projecting intoa horizontal slot, A', in the lower part of the bar T, of lwhich therack T forms a part. The shaft R is thus oscillated with the crossheadM, causing the rollers N N to reciprocate in the groove O, and thusmovethe holder K in a path that is parallel with said groove, said pathapproximating to the shape ofthe pattern I. The described adaptation ofthe holder K to slide on the cross-headM and ofthe tool-carrier K toslide in the tool-holder K gives the knife L the necessary freedom ofendwise movement required to compensatefor any slight difference betweenthe contours of the pattern I and IOO 4 the guide-groove O, and enablesthe knife L to be accurately guided by the pattern.

The knife L is preferably formed with a curved blade having twocutting-edges, so that it will cut when moving in either direction. Toenable the pitch or inclination of the knife to be changedl after eachmovement over the heel, so that it will cut during the reverse movement,I attach the knife to a lever, D', which is pivoted at E to the carrierK. On either side of the lever D' are oppositely-inclined flanges orstops F F'. (See Fig. 7 The lever D bears against one of said stops whenthe carrier K is moving in one direction and against the other stop whenthe carrier is moved in the opposite direction. At the end of eachreciprocating movement of the carrier K the lever D strikes one of twofixed arms, V V', located at opposite sides of the carrier, and istilted thereby over against the oppositeA stop, F'.

The feeding mechanism for moving the jack and heel-pattern forward stepby step during the trimming operation, to present all parts of the heeland pattern, respectively, to the knife L and roller B', may bevariously modified in its construction. In the present instance saidmechanism consists of a cam, H',

on the oscillating wheel S, a lever, I', pivoted at J' to a fixedstandard, L', and pressed at its upper end (which is provided with aroller, M) by a spring, N', against the side of the wheel S, a link, O',pivoted to the lower end of said lever, a gripping device, P', pivotedto said link, and a feed-bar, R', adapted to move longitudinally on theframe A, and detachably engaged, as hereinafter described ,with the baseof the jack.

rlhe gripping device l is composed of a piece of metal slotted on oneside to receive a flange on the feed-bar R', the sides of the slot beingV-shaped or pointed, as shown in dotted lines in Fig. 6. A spring, T',attached to the link O', bears against the gripping device and normallyholds it in the inclined position shown in Fig. 6, so that when the linkO' is moved in the direction indicated by the arrow in Fig. 6,

by the contact of the cam H with the lever I', the points of thegripping device will hug or grasp the flange of the feed-bar R and movesaid bar, together with the jack and heel-pattern, in the samedirection. rlhe pivotal connection of the gripping device causes it,when moved in the opposite direction, to release its hold on the flangeof 'the feed-bar. The cam H' is arranged to move the lever I, as de,-scribed, jnst before each reversal of the rotation of the wheel S, andafter the knife has passed entirely around the heel, so that the j ackand heel-pattern are moved forward after the completion of each cut ofthe knife.

Z represents a stop whichstrikes the lower end of the gripping devicewhen the knife L has reached the bottom of the heel and forces saiddevice into a vertical position, thereby vcausing it to release its holdon the feed-bar and stopping the feeding operation.

The feed-bar R enters a socket or orifice, NV', in the base of the post3 of the jack, and is adapted to slide freely in said orifice.

A" represents a wedge-bar, which is inserted in a transverse orifice inthe base of the post 3, and is adapted, when pushed inwardly,- to bindagainst the feed-bar R', and thus engage said bar firmly with the jack,and when drawn outwardly to release the feed-bar from the jack. Thesemovements of the wedge-bar are effected by a rock-shaft, B", journaledin fixed ears C" C" on the frame A, and provided with a groove, D", intowhich projects a stud, E", on the bar A". The rock-shaft B" is providedwith an arm or lever, F", which enables the operator to rotate theshaft. When the lever F" is raised, as shown in Fig. 8, one edge of thegroove D", bearing against` the stud E", withdraws the wedge-bar Asufficiently to release the feed-bar R from its engagement with thejack. Vhen the lever F is turned downwardly the other edge of the grooveD bears against the stud E" and presses the wedgebar A inwardly, so asto engage the feed-bar with the jack. The base of the jack is providedwith a rack, I", with which meshes a pinion, J", on a shaft, K,journaled i`n the frame A. The shaft K is provided with a lever, L", bywhich the pinion J" may be rotated in either direction to move the j acklongitudinally on the frame A.

The general operation is as follows: A boot or shoe is confined at itsheel by the jack, as above described, and the lever F" is raised, as

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shown in Fig. 8, to disengage the jack from the feed-bar. The jack isthen moved by the lever L" until the upper end of the lever F" coincideswith the upper edge of the heel, as shown in Fig. l, said lever beingarranged to act as a guide in adjusting the jack. The heel and patternare now so arranged that the knife will act on the upper edge of theheel, and the rollerB of the knife-carrier will bear on thecorresponding edge of the pattern, as shownA in Fig. l. The lever F" isthen moved downwardly to engage the feed-bar with the jack, and theshaft R is set in motion by a suitable clutch connecting the shaft Wwith the prime motor. The knife L is thus caused to reciprocate in apath that is governed by the pattern I, and after each movement of theknife the j ack and pattern are moved forward until the heel iscompletely trimmed, when the stop Z' arrests the feeding of the jack.`The 1novement of the knife is then arrested, another boot or shoe isplaced on the jack, the feedbar is disengaged from the jack, and thejack is moved back to its starting-point, and again engaged with thefeed-bar.

If it is desired to commence the trimming operation at the base orbottom of the heel, the direction of the movement imparted to thefeedbar may be reversed by turning the arm on the upper end of the leverI, bearing the roller M', so as to present said roller to the oppositeside of the wheel S from that shown in Fig. l, (said wheel having a cam,H, on each side,) and mov- IIO ing the gripping device P to the oppositeside of the lever I, and adjusting the spring T so that itwill give saidgripping device an opposite inclination from that shown in Figs. l and6.

It is obvious that by substituting a suitable burnishing-tool for thetrimming-knife the machine may be adapted for burnishing heels.

I claim- 1. The combination of a jack, a-hcel-pattern, a tool-carrieradapted to oscillate on the pattern, and having a trimming knife orequivalent tool, and mechanism for oscillating said carrier, the jackand pattern occupying a iiiged relation to each other, and beingmovable, as described, with relation to the tool-carrier.

2. The combination of a longitudinallymovable jack, a heel-patternmovable with the 2o jack, a tool-carrier adapted to be oscillated orreciprocated on the pattern, and provided with a trimming-knife orequivalent tool, mechanism for oscillating or reciprocating thetoolcarrier, and mechanism for feeding the jack and pattern forward stepby step, as set forth.

3. As a means for reciprocating the toolcarrier on the heel-pattern, thecombination of the tool-carrier K, the holder K,.the crosshead M, onwhich said holder is adapted to slide, the fixed plate having theheel-shaped groove O, receiving and guiding studs or rollers N N on theholder K, the journaled shaft R, rigidly attached to said cross-head,and mechanism for Voscillating said shaft, as set forth.

4. The oscillating shaft having the wheel S, provided on its side with acam, H, combined with the longitudinally-movable jack, the feed-bar,moved step bystep by the cam H through suitable intermediate devices,and mechanism whereby the j ack may bc engaged with. or released fromthe feed -bar, as set forth.

5. The frame A, having the journaled shaft K', provided with a pinion,J, and lever L, combined with the longitudinally movable jack, having arack, I7, meshing with the pinion J, as set forth.

6'. The combination of the feed-bar and its operating mechanism, thejack having an orifice receiving the feed-bar, the lateral wedgebararranged crosswise of the feed-bar, and the grooved rock-shaft adaptedto move the wedge in and out, and provided with the lever F, adapted toserve as a guide by which to adjust the jack, as set forth.

7. The double-edged knife L, pivoted to its carrier, combined with theinclined flanges F F on said carrier, whereby the knife is supported intwo positions and adapted to cut in two directions, and the fixed armsB, whereby the inclination of the knife is changed at each end of itsmovement, as set forth.

8. The combination ofthe flanged feed-bar R', the spring-impelledgripping device P, the lever I', supporting said gripping device andpivoted to a fixed standard, the oseillating wheel S, having a cam, H',and a spring, N, arranged to press the lever I against the side of thewheel S, as set forth.

9. The combination of the flanged feed-bar R', the spring-impelledgripping device Pf, operated as described, and the stop or projectionZon the feed-bar, whereby the gripping device is made inoperative whenthe trimming -knife reaches the bottom of the wheel, as set forth. l

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, this 13th day of September, 1882.

MERRILL A. TYLER.

iVitnesses:

, H. NV. STUDLEY,

C. F. BROWN.

